Pipe-cutter.



'PATENTED DBG. 29, 19,03.

' f No. 747,942.

` COLOM Y MARCA.

' l PIPE CUTTER. APPLIOATIQN FILED .MAY a, 1903.

No MODEL.

M1 MAWXM um Patented eeemieer 29, 1903.

PATENT OFFICE.

BUENAVENTURA OLOM Y MARCA, OF BARCELONA, SPAIN.

PIPE-CUTTER.

SPECIFICATION forming pere ef Lettereratent No. 747,942, dated December29,1903. Application filed May 6. 1903. y Serial No. 155.795. (Nomodel.)

To all whom itma'z/ concerm Be it known that I, BUENAVENTURA OoLoM YMARCA, a subject of the Kingof Spain, and a resident of Barcelona, inthe Province of Barcelona and Kingdom of Spain, have invented certainnew and useful Improvements in PipeOutters, of which the following is aspecification.

This invention relates to pipe-cutters, and particularly to thosedesigned for use in cutting boiler-tubes and the like, where the actionon the tube is from the interior.

The objects of the invention are, first, to produce'a cutter and, incombination therewith, means for forcing the cutter into contact withthe material operated upon and in the-provision of steadying-rollers andnovel means for mounting therollers according to the 'diameter of thework operated upon;

second, to produce a cutter-head, cutters oper' ating therein, and, incombination therewith, steadying-rollers and novel means for mountingthe steadying-rollers with relation tothe work operated upon, and meansfor securing the bearings of the steadying-rollers in the head; third,to produce a pipe-cutter in which the cutting members are moved withrelation to the work operated upon and means for rotating the head androllers.

A further object of the invention is to produce a pipe-cutterin whichthe position of the cnt may be determined by the adjustment of a gagewith relation to the cutters, the said gage abutting the end of the tubeto be operated'upon.

Further, an object of the invention is to produce a pipe-cutter which isapplicable to varying diameters within predetermined bounds, the saidcutters and guiding-rolls being in such relation as to permit theguide-rolls to act before bringing thecutters into operation.l

Finally, an object of the invention is to produce a pipe-cutter whichwill possess advan tages in points of utility, efticiency,`anddurability, proving at the same time satisfactory in use andcomparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will be had to theaccompanying drawings, forming part of this speciiicatiomwhereiu likecharacters denote corresponding parts in the several views, and inwhich- Figure 1 is a longitudinal vertical sectional view of the cutter.Fig. 2 is a similar view taken at right angles to the section of Fig. 1.Fig. 3 is a longitudinal vertical section of a slightly-modifiedconstruction to that shown in Fig. 1. Fig. 4 is a view in elevation of aseries of bearing-blocks of graded sizes. Fig. 5 is an end view of thedevice. Fig. 6 is a sectional view taken on the line 6 6 of Fig. 2.

Fig. 7 is a sectional view taken on the lineA 7 7 of Fig. 3.

In the drawings, A denotes the head of the cutter,havingils rear endinternally threaded at B for a portion of the distance, the said headhaving a way therein in which a sleeve C is seated,the said sleevehaving an annular shoulder i),which is seated against ashoulder in thehead. Ring-nut E is threaded in the end of the head and has its endbearing against the shoulder of the sleeve C, thereby retaining saidsleeve in the head. vThe sleeve (l is internally threaded, and the shankF,which is threaded to engage the threads of the sleeve, extends througha portion of the head and terminates in a wedge-.shaped head G, the saidwedge traveling in a'chalnber H, formed in the head. The sides of thewedge have ribs I, which travel in grooves J, formed longitudinally ofthe head, whereby the said Wedge is guided. Blocks K are slidable in-thehead and have dovetailed connections L with the wedge, whereby as thewedge' is moved longitudinally of the. head the blocks are reciprocated.The blocks' are held in place and are guided by the end of the'head andthe face-plate L', which is attached to the head by means of the screws.M.

The bearing-blocks N are slidable in recesses O, formed in the end ofthe head and in recesses of the face-plate M, andthe steadying-rollsPare mounted in thebearing-blocks, and from an inspection of Fig.4:,where a series of these blocks are shown, it will beobserved that thedistance apart of the said rolls may be regulated according to the sizeof the bearing-blocks employed.

IOO

The gage Q is adj ustahle on the head and is moved in relation to thecutters iu order to determine the position of the cutters Within a tubeor pipe. The collar R is held on the head by the screws S and limits therearward movements of the gage. The head may have a Series of recessesfor the points of the screws, there being two such recesses, shown sideby side in Fig. 3, though they may be multiplied according torequirement. y

In the modification shown in Fig. 3 the parts are all duplicates of theparts heretofore described, except that in this modification the wedgeG' has one beveled face,which acts in conjunction With' a singlebearingblock K', while the opposite face of the Wedge rides on the wallGr2 of the cutter-head. The wedge is dovetaled in the cutter-head andthe bearingblock K is dovetailed on the Wedge. In this construction thebearingblocks N are the same as those employed in t-he double cutter;but I prefer to use the guideroll N' with a rib N2 thereon,which willfollow in the cut made by the cutting-Wheel, and thereby act as a guideand steadying-roll.

Having fully described the invention, what I claim as new,and desire tosecure by Letters Patent, is-

l. Inapipecutter,aheadhavingperipheral recesses adapted to receive aseries of sets of dierential bearings for guide-wheels, means forretaining the bearings in position, blocks slidahle in theheads,cutter-Wheels jourualed in the blocks.

2. In a pipe-cutter, a head having recesses adapted to receive sets ofdiferential bearings, blocks slidable in the heads,cutterwheels carriedby the sliding blocks, guide-wheels carried by the differentialbearings, a face-plate having recesses to receive the dierentialbearings and means for securing the faceplate to the head.

3. In a pipe-cutter, a head having recesses adapted to receive series ofdiierential bearings, a Wedge having a shank threaded to movelongitudinally of the head, blocks slidable transversely of the head,means on the head for engaging the blocks,guiderol1sjournaled in thebearings and a gage adjustable on the head. y

In testimony whereof I afx my signature in the presence of twoWitnesses.

BUENAVENTURA COLOM l' MARCA.

Witnesses:

H. M. DANNEEL, JOHN ALsINA.

